Merge branch 'pl-ci-configuration-merge-train' into 'master'

Ensure that merge trains contain a specific list of CI jobs

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/183191



Merged-by: Jennifer Li <jli@gitlab.com>
Approved-by: Jennifer Li <jli@gitlab.com>
Co-authored-by: Peter Leitzen <pleitzen@gitlab.com>